Does a temperamental youth ensure the existence of future planets?
NASA — Orion the Hunter is one of the most easily recognized constellations in the night sky, and lying just beneath his belt is the Orion Nebula, a nursery that cradles about 1400 newborn stars. Of these stars that gild Orion’s sword, about 30 of them will grow up to be similar to our own sun. Half of the young suns in this cluster show evidence of being surrounded by planet-forming disks. In these gaseous envelopes, tiny grains grow into larger rocks, which eventually become the cores of both rocky and gaseous planets. Astronomers using the Chandra X-Ray Observatory have discovered that the young stars in the Orion Nebula let loose an extraordinary amount of X-rays. They observed 41 powerful X-ray flares during 13 weeks of observation. “These flares are incredibly strong,” says Eric Feigelson of Penn State University, principal investigator for the international Chandra Orion Ultradeep Project. “Even the faintest of the X-ray events seen with Chandra is more powerful than the strong
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